Front cabin bottom guard plate sound-absorbing and heat-insulating cotton based on back surface glue compounding

The utility model belongs to the technical field of engine protection plates, particularly relates to front cabin bottom protection plate sound-absorbing and heat-insulating cotton based on back glue compounding, and aims to solve the problems that when existing sound-absorbing cotton is replaced, joints on fixing blocks need to be cleaned, the fixing blocks need to be replaced if the joints are not cleaned, the fixing blocks are clamped in sliding grooves and are inconvenient to replace, and the cost is high. According to the scheme, the sound-absorbing and heat-insulating structure comprises a protective plate and sound-absorbing and heat-insulating cotton arranged on the protective plate, a rubber pad is arranged at the top of the protective plate, the sound-absorbing and heat-insulating cotton is embedded in the rubber pad, and the sound-absorbing and heat-insulating cotton is limited through the rubber pad during installation; according to the sound-absorbing and heat-insulating structure, the sound-abso